Okay, let's actually start some decent discussion here. (says the person who actively participated in the recent Volc discussion.)
A -> A-: Disagreed. While Gengar's a real pain to get onto the field, once it is on, something's dying. The fact that it has fantastic SE coverage in the current metagame along with the freedom to run a supporting move (or Icy Wind for even better SE coverage) means that it becomes a massive threat to both offense and defense. Stall has to be wary of Substitute and Taunt, Offense has to b wary of Will-O-Wisp if it does have a switch-in, and Garchomp, Landog, and Tornadus need to be wary wary of Icy Wind. In other words, the only real problem with Gengar is that it's very hard to switch in, as its bulk is only just enough to save itself from common priority. (I'd actually support a move back up to A+, but it just dropped a cycle or two ago, so I won't try and pursue it.)
A -> A-: Agreed. Simply put, M-Slowbro gets easily overwhelmed, even on the physical side. But that's only from my experience playing against it; I've never really used it myself, so take this with a grain of salt.
B+ -> A-: Agreed. it's a fantastic stallbreaker that deals with the common stall teams seen recently quite well, along with acting as a great support Pokemon with things like Heal Bell under its belt. If you decide to run Thunder Wave, Togekiss can also avoid getting Gothitelle'd if played right.
A- -> B+: Agreed. Not only are people starting to realize that Shaymin's not that different from it, but its typing is easily exploitable by the offense in the current metagame; it's still a good pick for balance teams, but it's starting to become more of a liability against offense until someone techs scarf celebi and I think a drop is needed to reflect that.
B+ -> B: Disagreed. I'll be honest, the only thing it really has over Megacham is an extra 10 base speed and higher Special Defense, but to me, that's enough to keep it from dropping. In a metagame where offense has gotten more popular, the ability to speed tie with Pokemon like the Latis and M-Diancie can be invaluable. It also still pulls its weight against bulkier builds very effectively, although megacham does outclass it in that respect.
B+ -> B-: Agreed. While I personally think that i should simply drop to B and not to B-, people finally seem to be coming around to the fact that despite its ability, it's not actually that good in Rain due to Mega Slot problems. Outside of rain, it's too slow to be much of an offensive threat and only threatening Stall teams, and as a defensive Pokemon the lack of Leftovers and reliable recovery wear it down really, really fast.





